Hostname: page-component-586b7cd67f-dlnhk Total loading time: 0 Render date: 2024-11-29T02:00:26.655Z Has data issue: false hasContentIssue false
  • English
  • Français

Partially-ordered mixed-layer mica-montmorillonite from Maitland, New South Wales

Published online by Cambridge University Press:  09 July 2018

J. D. Hamilton
J. D. Hamilton*
Affiliation:
Division of Building Research, Commonwealth Scientific and Industrial Research Organization, Melbourne, Australia
Get access Rights & Permissions [Opens in a new window]

Abstract

A mixed-layer clay mineral from a Permian sandstone at Maitland, New South Wales has been identified as 2:1 mica-montmorillonite structure with ‘imperfectly regular’ interstratification. The results from Fourier transform analysis and Fourier synthesis of 00l X-ray diffraction data have not fully elucidated the interlayering patterns but have indicated that there is complete alteration in the stacking and that the 1:1 (allevardite type) layer sequence relationship is strongly developed.

X-ray diffraction, differential thermal, thermogravimetric, chemical, cation exchange and electron microscopic data for the mineral are given. The chemical analysis for the Na+-saturated material gives the structural formula

K0.90 Ca0.06 Na0.49 [Al3.52, Fe0.183+ Mg0.27 Ti0.03 (Al1.24 Si6.76) O20 (OH)4] H2O

It is considered that most of the fixed K+ and Ca++ ions are probably held in the mica interlayers, while the exchangeable components are largely accommodated in the expanded montmorillonite zones.

Type
Research Article
Information
Clay Minerals , Volume 7 , Issue 1 , July 1967 , pp. 63 - 78
Copyright
Copyright © The Mineralogical Society of Great Britain and Ireland 1967

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

Bradley, W.F. & Grim, R.E. (1961) The X-ray Identification and Crystal Structures of Clay Minerals, 2nd edn. (Brown, G., editor), Chap. 5. Mineralogical Society, London.Google Scholar
Brindley, G.W. (1956) Am. Mine. 41, 91.Google Scholar
Carthew, A.R. & Cole, W.F. (1953) Aust. J. Instrum. Techno. 9, 23.Google Scholar
Cole, W.F & Carthew, A.R. (1953) Pap. Proc. R. Soc. Tas. 87, 1.Google Scholar
Grim, R.E. & Rowland, R.A. (1941) Am. Mine. 27, 746.Google Scholar
Hamilton, J. D. (1963) Unpublished Ph.D. Thesis, University of Sydney.Google Scholar
Heystek, H. (1954) Mineralog. Ma. 30, 400.Google Scholar
Jackson, W.W. & West, J. (1933) Z. Kristallogr. KristaUgeo. 85, 160.CrossRefGoogle Scholar
Levinson, A.A. (1955) Am. Mine. 40, 41.Google Scholar
Loughnan, F.C. & Craig, D.C. (1961) Aust. J. Sc. 23, 374.Google Scholar
MacEwan, D.M.C. (1956a) Kolloidzeitschrif.149, 96.Google Scholar
MacEwan, D.M.C. (1956b) Clays Clay Mine. 4, 166.CrossRefGoogle Scholar
Mackenzie, R.C., Walker, G.F. & Hart, R. (1949) Mineralog. Ma. 28, 704.Google Scholar
Middleton, K.R. & Westgarth, D.R. (1964) Soil Sc. 97, 221.CrossRefGoogle Scholar
Rowland, R.A., Weiss, K.J. & Bradley, W.F. (1956) Clays Clay Mine. 4, 85.CrossRefGoogle Scholar
Sato, M., Oinuma, K. & Kazuo, K. (1965) Nature, Lon. 208, 179.CrossRefGoogle Scholar
Schollenberger, C.J. & Simons, R.H. (1945) Soil Sc. 59, 13.CrossRefGoogle Scholar
Taboadela, M.M. & Ferrandis, V.A. (1957) The Differential Thermal Investigation of Clays (Mackenzie, R.C., editor), Chap. 6. Mineralogical Society, London.Google Scholar